The Sitemap XML protocol is also extended to provide a way of listing multiple Sitemaps in a 'Sitemap index' file. The maximum Sitemap size of 50 MiB or 50,000 URLs means this is necessary for large sites. An example of Sitemap index referencing one separate sitemap follows.
Cultural or artificial eutrophication occurs when human activity introduces increased amounts of these nutrients, which speed up plant growth and eventually choke the lake of all of its animal life.n nature, eutrophication is a common phenomenon in freshwater ecosystems and is really a part of the normal aging process of many lakes and ponds. Some never experience it because of a lack of warmth and light, but many do.
Impact of Human Intervention on Phosphorus Cycle. As the dominate species on Earth, we, as Humans, tend to follow a destructive path of nature. Most of the time, there is an adverse effect of human actions, thus interrupting nature's cycles. In the phosphorous cycle, the main pollution is from commercial fertilizer, which leads to eutrophication from the runoff. Eutrophication is the natural process by which bodies of water receive excess nutrients, thus stimulating excessive plant growth. The most phosphate runoff is from cutting down rain forests through the use of agricultural fertilizer. We can prevent our detrimental actions before they worsen. Preventive actions that can be taken include lessening or limiting pesticides and fertilizers used in agriculture, cleaning our waste facilities and plants, and contributing to our role to living in a sustainable environment.